Core-molding machine



M. ximzucK.

CORE MOLDING MACHINE.

APPLICATION FILED OCT. 4. 1920.

Patentedfiline 14, 1921.

3 SHEETS-SHEET 1.

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A TTORNEYJ:

M. JANZUCK.

CORE MOLDING MACHINE.

APPLICATION FILED ocr.4.1920.

Patented June 14, 1921.

3 SHEETSSHEET 2.

N/c/ma JmzacK ATTORNEYS:

MICHAEL JANZUCK, OF KOKOMO, INDIANA.

CORE-MOLDING MACHINE.

Application filed October 4, 1920.

To (ZZZ whom it may concern Be it known that I, MICHAEL JANzUoK, a citizen of Poland, residing at Kokomo, in the county of Howard and State of Indiana, have invented certain new and useful Improvements in Core-Molding Machines, of which the following is a specification.

This invention relates to core making machines and is designed primarily for making cores used in molding, one of the features of the invention being the provision of a hopper into which material for forming the cores is placed, said hopper havingmeans therein for forcing the core forming material through a nozzle to shape the core.

A further feature of the invention is the provision of means for mixing sand, or the like, with the material of which the core is constructed, means being provided for causing the sand, or the like, to gradually feed into the hopper.

A further feature of the invention is the provision of means for mixing the sand with the other core forming ingredients and feeding the mixture toward the worm within the hopper.

A further feature of the invention is the provision of an off-bearing or core handling mechanism.

A further feature of the invention is the provision of a core receiving table, said table having parts which travel intermlttently for successively positioning a tray to receive the cores as they are discharged from the off-bearing device.

A further feature of the invention is the provision of means for removably attaching the nozzle to the hopper of the device so that cores of different diameters may be formed.

A further feature of the invention is the provision of means for operating the various parts of the molding device.

ther objects and advantages will be hereinafter more fully set forth and pointed out in the accompanying specification. V

In the accompanying drawings which are made a part of this application,

Figure 1 is a top plan view of the molding device complete,

Fig. 2 is a side elevation thereof,

. Fig. 3 is a sectional view as seen on line 33 Fig. 1,

Fig. 4 is an enlargeddetail sectional view as seen on line 44 Fig. 1

F 1 5 is a sectional view as seen on line 55 1g. 4,

Specification of Letters Patent.

1Q is shifted Patented June 14, 1921. Serial No. 414,535.

Fig. 6 is an enlarged fragmentary elevation of parts of the core receiving table and the off-bearing mechanism, and F 1g. 7 is a perspective view of the off-bearmgQ mechanism.

eferring to the drawings in which similar reference numerals parts throughout the several views, 1 in l is a funnel-shaped member 4: sand or similar substance is placed to be mixed with the contents of the hopper, the contents of the funnel-shaped member gradually feeding into the hopper. xtending transversely through the lower portion of the hopper 1 is a shaft 5 on which is mounted a worm 6, said worm being so arranged that it forces the contents of the hopper into the tubular extension 2 and through the tubular mold 3, said shaft being rotatably mounted in a suitable bracket 7. The worm 6 is driven from a pulley 8 on a line shaft 9 through the medium of a belt 10, said belt passing around a driving pulley 11 on a shaft 12, said shaft 12 having a gear 13 thereon which meshes with a gear 14 on the shaft 5. The shaft 12 is also provided with an idler pulley 15 so that when the belt onto said idler pulley the worm Wlll remain stationary.

In order to thoroughly commingle the core forming product with the contents of the funnel-shaped member 4, combined mixing andtamper heads 16 are positioned within the hopper 1 and connected with arms 17, which arms are substantially U-shaped and project through elongated slots 18 in one end wall of the hopper 1, the outer ends of said arms being eccentrically attached to disks 19 rotatably supported on the end wall of the hopper. he disks 19 are provided with pulleys 20 around which extends a belt 21, said belt also extending around a pulley 22 on shaft 5, and by means of which the disks 19are driven and it will be readily seen that as the disks rotate the arms 17, and the heads 16 carried thereby will be raised and lowered thereby comminglin the contents of the hopper and forcing the same downwardly in the path of the worm. In order to cause the contents of the funnel-shaped member to gradually feed into the hopper 1, a bar 23 is pivotally attached to a bracke 24: on one face of the hopper, one end of the bar being bent inwardly so that it will be in position to strike one face of the funnel-shaped member while the opposite end of the bar is extended inwardly so as to contact with a toothed wheel 25, said wheel being mounted upon a shaft 26 suspended from the bracket 7. The teeth on the wheel 25 swing the upper end of the bar 23 outwardly, and when released from the teeth a spring 27 will draw the upper end of the bar inwardly and deliver a 'blow on the funnel-shaped member 4, thereby jarring the contents of said funnel-shaped member and causing it to feed through the restricted portion thereof. The shaft 26 is rotated from the shaft 5 by plae ing a pulley 28 on the shaft 5, and a pulley 29 on the shaft 26, a belt 30 passing around said pulleys.

As the cores, when they leave the molding tubes 3, are more or less plastic it is necessary to deposit the cores on a tray with considerable care, and to accomplish this result an off-bearing member 31 is provided which comprises a plurality of trough-like members 32, which are attached together and mounted upon a shaft 33, so that they will successively rotate and be positioned to rc ceive the core as it is discharged from the molding tube 3, the curvature of the members 32 being such that as the off-bearing member 31 rotates the cores will be rolled onto a tray 34. The off-bearing member 3']. is positioned horizontally above a table 35, said table including chains 36 which pass around sprocket wheels 37 at the ends of the table and below sprocket wheels 38 adjacent the lower portion of the table, the sprockets 37 and 38 being mounted upon shafts 39 and l0 respectively. Extending transversely of the travel of the chains 36 are cross bars 41, and in order to form a cushion for the tray 3%, so that no appreciable jar will be given the cores as they are deposited 'on the tray, the cross bars are mounted uponsprings 12., The table is preferably inclined slightly toward itsou'ter end, thereby positioning the tray at a slight inclination and causing the successive cores as they are deposited upon the tray to move into close proximity to the preceding core. The cores'are severed into lengths by providing each trough-like member 32 with a curved knife 43, said knives being arranged at the ends'off the trough-like members adja cent the outer'end of the tube 3, the knives being so arranged that they will sever the core as the off-bearing member starts, to rotate. The shaft carrying the off-bearing member 31 is positioned at one side of the axis of .the'tube-3, and ,the member is driven from the shaft 40 through the medium of sprockets 14: and on the outer end of the bearing mechanism shaft of the off-bearing member 31 and the I shaft 2L0 respectively, consequently the driving means for the off-bearing member '31 will be entirely out of the road of the cores.

The chain 36 is driven from a pulley e6 on the line shaft 9 through the medium of a belt l'lsaid belt passing around a pulley 48 mounted on a shaft 4E9, which pulley in this instance is an idler, said shaft also having a driving pulley 50 thereon, so that when the belt is shifted onto said pulley the chain 36 and parts connected therewith will be driven. the right direction a gear 51 is mounted on the shaft 49 with which meshes a gear 52 on a shaft '53, said shaft having a belt pulley 5 1 thereon, around which passes a belt 55, said belt also passing around a pulley 56 on the inner end of the shaft 10.

Tn operating this device it is the inten tion to have the molding arrangement remain idle whilethe off-bearing operation is being performed, and to have the off-bearing parts remain idle while the molding operation is being performed, and any suitable means may be provided for accomplishing this result, but as shown in Fig. 1, any suitable form of belt shifts 57 and 58 may be provided for moving the belts 10 and 47 respectively, into operative or inoperative positions, and it will be understood, of course, that the power may be disconnected from both the molding 'machineand-the offbearing mechanism simultaneously. The line shaft 9 is operated from any suitable form of motor 59, which is connected witha pulley 60 on line shaft 9 by belt 61. In'operation when the core is to be molded the belt 10 is positioned as shown in Fig." 1, and when power is applied to the lineshaft 9 the orm 6, and parts associated therewith will be driven, forcing a core through the molding tube 3 and depositing the same-on one of the trough-like members 32. l-Vhen the proper length of core has been molded the belt 10 is shifted ontothe pulley 15 and stopping the operation of the worm 6, while the belt at? is simultaneously moved onto the pulley 50 which will set up operation of the off-bearing mechanism, and parts associated therewith. rotates the knife 43 adjacent the end of the molding tube will sever the core, and as the trough-like member swings downwardly the core will be gradually rolled from off the trough-like member and leposited upon the tray 34:. As soon as the off bearin member I n v I has rotated a sufficient 'CllSlSElIlCB to bring a vnew trough-like member in position to receive the next core from the moldingtube 3,

"the belt 47 is shifted back to the pulley 48 thereby stopping the operation of the oif simultaneously with the rotating of the off-bearing member to deposit the core on the tray the chain 36 'As the off-bearing member 31''*" In order to drive the chain 36 in will be given a slight endwise movement thereby advancing the tray a Sufficient distance to deposit the new core immediately in the rear of the preceding core, the slight inclination of the tray causing the newly deposited core to snugly nest near the preceding core. As soon as the prescribed number of cores has been deposited on the tray, said tray is removed and a new tray inserted on the cross bars 41 and ready to receive additional cores.

By forming the cores in this manner the operation is greatly facilitated and a more perfect core is produced as the cores are not manually handled until such time as they have become sufficiently set to retain their shape. It will likewise be seen that cores of various diameters may be made by changing the size of the molding tubes 3, and it will be likewise seen that by employing the combined mixing and tamping heads 16, the product of which the cores are formed will be of the proper consistency as the ingreclients composing the same are uniformly commingled.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a core molding device, a hopper adapted to contain products for forming cores, a mold connected with said hopper, means for forcing the contents of the hopper through the mold for forming a core, a rotatable off-bearing member for receiving the core from the mold, means for severing the core, a receptacle for receiving the cores, and means for rotating the off-bearing member for depositing the core on the receiving member.

2. In a core molding machine a hopper adapted to contain ingredients to be formed into a core, a member above said hopper for containing one of the ingredients of the core forming mixture, means for successively delivering blows on said member for causing the contents thereof to feed into the hopper,

means. for thoroughly commingling the contents of said member with the contents of said hopper and for forcing said contents downwardly in the hopper, a molding tube attached to the hopper, and means for forcing the contents of the hopper through said tube for forming a core.

3. The combination with a core molding device, of a rotatable off-bearing member, a tray for receiving the cores from the oft bearing member, means for yieldingly supporting the tray, and means for intermittently moving the tray for receiving additional cores from the off-bearing member.

4. The combination with a core molding machine, of an off-bearing member for re ceiving the cores as they are discharged from the molding machine, comprising a plurality of trough-like members, means for successively rotating the trough-like members to position them to receive the cores from the molding machine, and means operable with the trough-like members for severing the cores.

5. The combination with a core molding machine, of an off-bearing member arranged to receive a core from the molding machine, a tray for receiving the cores from the 0& bearing member, and means for operating the off-bearing member for causing the cores to descend by gravity onto the receiving tray.

6. The combination with a core molding machine, of a revolving off-bearing member arranged to cause the core to leave the offbearing member with a rolling movement whereby the shape of the core will be maintained.

In witness whereof, I have hereunto set my hand and seal at Indianapolis, Indiana, this 25th day of September, A. D. nineteen hundred and twenty.

MICHAEL JANZUCK.

IVitnesses CAREY S. FRYE, M. L. SHULER. 

